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136 results for “Portulaca”
Santa Rita Experimental Range site, station Pasture 22 at Santa Rita Experimental Range, study of plant density of Portulaca in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Rita Experimental Range (SRE) contains plant density of Portulaca measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Rita Experimental Range site, station Pasture 6B at Santa Rita Experimental Range, study of plant density of Portulaca in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Rita Experimental Range (SRE) contains plant density of Portulaca measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Rita Experimental Range site, station Pasture 8 at Santa Rita Experimental Range, study of plant density of Portulaca in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Rita Experimental Range (SRE) contains plant density of Portulaca measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Rita Experimental Range site, station Santa Rita Experimental Range control treatment: pastures 8 and 22, study of plant density of Portulaca in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Rita Experimental Range (SRE) contains plant density of Portulaca measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Santa Rita Experimental Range site, station Santa Rita Experimental Range pastures where the existing mesquite were killed and the pastures were grazed: pastures 3, 5N, 5S, 6B and 12B, study of plant density of Portulaca in units of numberPerMeterSquared on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Santa Rita Experimental Range (SRE) contains plant density of Portulaca measurements in numberPerMeterSquared units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 2, standard levels of chemical inputs, no tillage, study of aboveground net primary productivity of Portulaca oleracea in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Portulaca oleracea measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 3, organic-based low chemical input (banded herbicide, starter N), winter leguminous crop, annual tillage and post-planting cultivation, study of aboveground net primary productivity of Portulaca oleracea in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Portulaca oleracea measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Kellogg Biological Station, study of aboveground net primary productivity of Portulaca oleracea in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Portulaca oleracea measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
FIGURE 4 in Taxonomic notes Portulaca (Portulacaceae) in South America I: the taxonomic status of P. mucronulata var. microphylla
FIGURE 4. Portulaca ferricola collected from canga vegetation in eastern Bolivia (Villarroel et al. 2069, USZ!).
FIGURE 1. Portulaca ferricola. A in Taxonomic notes Portulaca (Portulacaceae) in South America I: the taxonomic status of P. mucronulata var. microphylla
FIGURE 1. Portulaca ferricola. A. Overview of the habitat. B. Aspect of the individual in wet period. C. Aspect of the individual in dry period. D. Flower. E. Detail of stem and branches covered with an exfoliating brown bark. F. Fruit. G. Seeds (Takahasi et al. 1193, FUEL), blue circle highlighting the cells toward the peripheral face of the seed par-domed and red circle highlighting the anticlinal walls undulate with U- and V-type patterns [photos by A. Takahasi (A–D) and by J.R. Ferraz (E–G)].
FIGURE 1 in Taxonomic reexamination of Portulaca boninensis (Portulacaceae) in the Bonin (Ogasawara) Islands of Japan using molecular and morphological data
FIGURE 1. Geographic location of Chichi-jima and Minami-iwo-to islands (the Bonin Islands) where Portulaca boninensis was collected.
FIGURE 3 in Taxonomic reexamination of Portulaca boninensis (Portulacaceae) in the Bonin (Ogasawara) Islands of Japan using molecular and morphological data
FIGURE 3. Bayesian phylogenetic tree of 38OTUs of Portulaca based on ITS sequences. Bayesian posterior probabilities (left) and bootstrap percentages in the MP analysis (right) are shown. *Portulaca boninensis followed Tuyama (1983).
FIGURE 2. Portulaca boninensis and related species. A−B in Taxonomic reexamination of Portulaca boninensis (Portulacaceae) in the Bonin (Ogasawara) Islands of Japan using molecular and morphological data
FIGURE 2. Portulaca boninensis and related species. A−B) Habitat and flower of P. boninensis (G. Kokubugata17300-17302, Chichijima Island of the Bonin Islands, Japan). C) P. psammotropha (G. Kokubugata13338, Hsiao-liuqie Island, Taiwan). D) P. okinawensis var. okinawensis (G. Kokubugata13338, Okinawa Island of the Ryukyus, Japan). E) P. okinawensis var. amamiensis (G. Kokubugata15198, Amami Island of the Ryukyus, Japan). F) P. pilosa (G. Kokubugata17303, Chichi-jima Island of the Bonin Islands, Japan). Scale bars, 5 mm. Arrows in A, C, and F indicate axial hairs.
FIGURE 1 in Diversification of inflorescence types in Portulaca (Portulacaceae) and its systematic implications
FIGURE 1. Bayesian allcompat tree of Portulacaceae and outgroups. Analysis of a combined matrix of chloroplast atpI-atpH, trnK-matK, and trnT-psbD intergenic spacers, ndhA intron, and coding ndhF sequences. Nodes with posterior probabilities ≥ 0.95 are indicated.
FIGURE 2 in Diversification of inflorescence types in Portulaca (Portulacaceae) and its systematic implications
FIGURE 2. Ancestral character reconstruction of inflorescence types in Portulacaceae and outgroups. Phylogenetic tree with the highest likelihood retrieved from the Bayesian analysis of a combined matrix of atpI-atpH, trnK-matK, and trnT-psbD intergenic spacers, ndhA intron, and coding ndhF sequences. A) Parsimony reconstruction. B) Maximum likelihood reconstruction; proportional likelihoods for each character state are shown as pie charts at nodes.
FIGURE 4. A. Basella alba L. B. Drosera burmannii Vahl C. Portulaca tuberosa Roxb. L. D. Ceropegia juncea Roxb. E. Ceropegia spiralis Wight F in Forest flora of Badami Hills of Bagalkot district, Karnataka, India
FIGURE 4. A. Basella alba L. B. Drosera burmannii Vahl C. Portulaca tuberosa Roxb. L. D. Ceropegia juncea Roxb. E. Ceropegia spiralis Wight F. Merremia hederacea (Burm.f.) Hallier f. G. Solanum pubescens Willd. H. Barleria stocksii T. Anderson I. Utricularia caerulea L.
FIGURE 3 in Two new species of Portulaca (Portulacaceae) from India
FIGURE 3. Portulaca lakshminarasimhaniana: A. Habit; B. Flower; C. Tetramerous flower; D. Lateral view; E. Sepals; F. Petal; G. Gynoecium; H. Stigma; I. Fruit; J. Seeds; K. Scanning electron microphotograph of Seeds.
FIGURE 2 in Two new species of Portulaca (Portulacaceae) from India
FIGURE 2. Portulaca badamica: A. Habit; B. Leaf; C. Flower; D. Sepals; E. Petal; F. Androecium; G. Gynoecium; H. Fruit; I. Seeds.
FIGURE 1 in Two new species of Portulaca (Portulacaceae) from India
FIGURE 1. Portulaca badamica: A. Habit; B. Leaves; C. Chasmogamous flower; D. Cleistogamous flower; E. Sepals; F. Petals; G. Gynoecium; H. Stigma; I. Fruit; J. Seeds. K. Scanning electron microphotograph of Seeds.
FIGURE 4 in Two new species of Portulaca (Portulacaceae) from India
FIGURE 4. Portulaca lakshminarasimhaniana: A. Habit; B. Leaves; C. Flower; D. Calyx; E. Petals; F. Androecium; G. Gynoecium; H. Fruit; I. Seed.
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